CN105508082B - It is pressurized No leakage electromagnetic control type fuel gas ejecting device - Google Patents

It is pressurized No leakage electromagnetic control type fuel gas ejecting device Download PDF

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Publication number
CN105508082B
CN105508082B CN201510853734.9A CN201510853734A CN105508082B CN 105508082 B CN105508082 B CN 105508082B CN 201510853734 A CN201510853734 A CN 201510853734A CN 105508082 B CN105508082 B CN 105508082B
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valve
needle
control
seat
valve rod
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CN105508082A (en
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范立云
董晓露
费红姿
李学民
彭怀利
张孝勇
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Harbin Engineering University
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Harbin Engineering University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/30Use of alternative fuels, e.g. biofuels

Abstract

The purpose of the present invention is to provide supercharging No leakage electromagnetic control type fuel gas ejecting devices, including compression portion, control section, nozzle segment and injection apparatus shell.Building pressure using high pressure oil in control chamber makes needle-valve lift, response quickly, and the control of jet amount is accurate;The oily draining oil circuit of control flows through electromagnetic valve body top, plays cooling effect, improves the stability of electromagnetic valve work;Combustion gas is pressurized using charged piston, combustion gas supercharging and fuel gas injection process is separately controlled using two solenoid valves, jet process can flexibly switch between supercharging or no charge mode, pressurization is anxious after first delaying, variable jet rule can be achieved, meet requirement of the Different Work Condition of Engine to fuel gas injection pressure;Compression portion prevents pumping chamber's gas leakage using long sealing couple and big oil pocket, and seal band is designed between needle-valve and needle-valve pedestal, and introducing portion control oil makees sealing oil seal combustion gas, prevents gas leakage in needle chamber.

Description

It is pressurized No leakage electromagnetic control type fuel gas ejecting device
Technical field
The present invention relates to a kind of engines, the specifically fuel gas ejecting device of dual fuel engine.
Background technology
As constantly consuming for fossil fuel is increasingly strict with engine exhaust regulation, the development of engine is faced with energy The dual-pressure of source crisis and problem of environmental pollution is to solve energy problem and problem of environmental pollution simultaneously using alternative fuel Effective means.The advantages that natural gas, oil gas etc. is resourceful with its, cheap, combustion cleaning, big calorific value, becomes current The main substitute fuel of internal combustion engine.
Current in-cylinder direct-jet gas injection system mainly controls needle-valve piston by the high-speed electromagnetic valve being internally integrated Movement may be implemented quantitatively to control fuel gas injection timing, jet, have good to realize the open and close of fuel gas injection valve Good effects of energy saving and emission reduction, but it there are problems that:First, in order to improve oil, gas mixability in engine cylinder, jet dress It sets and fuel gas injection pressure requirements is continuously improved, compare liquid fuel, combustion gas is pressurized according to high-pressure pump, is filled from pump end to injection Set transmission process to pipeline configuration, intensity requirement is higher and gas leakage is serious;Second, with the movement of needle-valve, combustion gas is along needle Valve coupling gap leaks upwards, and leakage combustion gas, which enters control chamber, causes fuel gas injection pressure and injection rate to reduce, and seriously affects Air-jet device job stability.
Invention content
The purpose of the present invention is to provide can be achieved to fuel gas injection amount, jet Time Precise Controlling, jet process can be Switch between supercharging or non pressurized both of which, to reach the supercharging No leakage electromagnetic control type combustion gas of the adjustable purpose of whiff pressure Injection apparatus.
The object of the present invention is achieved like this:
The present invention is pressurized No leakage electromagnetic control type fuel gas ejecting device, it is characterized in that:Including compression portion, control section And nozzle segment;
The compression portion includes boost electromagnetic valve, intake valve, charged piston set, charged piston;The boost electromagnetic valve Including electromagnetic valve body, solenoid valve valve rod, baffle, solenoid valve seat, solenoid valve armature, supercharging coil, supercharging electromagnet, solenoid valve rank Iron setting supercharging electromagnet by, be pressurized electromagnet in winding supercharging coil, solenoid valve valve rod one end by be pressurized locating snap ring with Solenoid valve armature is fixed, and the other end runs through solenoid valve seat, and the rear held herein is fixed with baffle, and electricity is cased on solenoid valve valve rod The both ends of magnet valve spring, magnetic valve spring are withstood on respectively on solenoid valve seat and solenoid valve valve rod, and charged piston puts on end installation In solenoid valve seat, charged piston be mounted on charged piston set in, charged piston upper end, charged piston set and solenoid valve seat it Between formed servo oil pocket, charged piston lower end and charged piston set between form pumping chamber, be cased with charged piston on charged piston The both ends of spring, charged piston spring are withstood on respectively between the lower section of charged piston upper end and charged piston set;Intake valve includes Inlet valve spindle, inlet valve spring, inlet valve seat, intake valve big spring seat, intake valve little spring seat, inlet valve seat are fixed on increasing It presses in piston bush, intake valve big spring seat and intake valve little spring seat are respectively positioned in inlet valve seat, and intake valve big spring seat will be into The inner cavity of air valve seat is separated into left chamber and right chamber, and the head of air inlet valve lever is pressed on the outer wall of inlet valve seat, the tail of air inlet valve lever Portion stretches into inlet valve seat and is connected with check valve little spring seat across intake valve big spring seat, intake valve resetting spring be located at into It between air valve big spring seat and intake valve little spring seat and is placed on air inlet valve lever, air inlet, air inlet is opened up in charged piston set Mouth is communicated with inlet valve seat left chamber, is communicated with pumping chamber on the outside of air inlet valve lever head;
The control section includes conical surface seal seat under conical surface seal receptacle, valve rod on control solenoid valve, valve rod;It is described It includes control electromagnet, control coil, control armature, control valve rod, application valve body, application valve body, valve to control solenoid valve Conical surface seal seat sets gradually and is installed in injection apparatus body from top to bottom under conical surface seal receptacle and valve rod on bar, injection dress Body upper end is set in charged piston set, control electromagnet is mounted in application valve body, and control coil is wrapped in control electricity On magnet, control armature is located at below control electromagnet, and control valve rod one end is mutually fixed by controlling locating snap ring with control armature, The other end is through conical surface seal receptacle on valve rod and stretches under valve rod in conical surface seal seat, controls and is provided with sealed taper on valve rod Face and lower sealing cone, upper sealing cone are matched with conical surface sealed base on valve rod, and lower sealing cone and the conical surface under valve rod are close Back cover seat matches, and controls and low pressure oil annulus is arranged on valve rod above upper sealing cone, and control valve rod upper-lower seal is set below face It sets high pressure oil annulus, drain tap is set on valve rod in conical surface sealed base, high-pressure oil passage is set in conical surface seal pedestal under valve rod Entrance, low pressure oil annulus are connected to drain tap, and high pressure oil annulus is connected to high-pressure oil passage entrance, control and are cased with control spring on valve rod, The both ends of control spring are withstood on control valve rod and valve rod respectively between conical surface sealed base;
The nozzle segment includes needle-valve, needle-valve resetting spring, needle-valve pedestal, and needle-valve pedestal is fixed under injection apparatus body Side, needle-valve upper end stretch under valve rod in conical surface seal pedestal, and needle-valve lower end is located in needle-valve pedestal, and circle is arranged on needle-valve Ring-shaped step is located at the part below annular step on needle-valve and forms control chamber between injection apparatus body, is located on needle-valve Part above annular step is cased with needle-valve resetting spring, and needle chamber and sealing ring are respectively formed between needle-valve and needle-valve pedestal Band, the setting gas inlet passage communicated with needle chamber and the oil input channel communicated with seal band, gas inlet in needle-valve pedestal Road passes through conical surface seal pedestal under injection apparatus body, valve rod, conical surface sealed base on valve rod, is communicated with pumping chamber, oil input channel is worn Overspray apparatus body is communicated with the high-pressure oil passage entrance in conical surface seal pedestal under valve rod.
The present invention can also include:
1, it is provided with annular oily band on the solenoid valve valve rod, servo oil oil input channel and servo oil are provided on solenoid valve seat Draining road, when solenoid valve valve rod is withstood on baffle, annular oil band is communicated with servo oil draining road and servo oil pocket, solenoid valve valve rod After being moved to the left with solenoid valve armature, annular oil band is communicated with servo oil oil input channel and servo oil pocket.
Advantage of the invention is that:The supercharging No leakage electromagnetic control type fuel gas ejecting device of the present invention uses dual-coil electromagnetic valve Jet process is controlled, a solenoid valve control combustion gas supercharging, a solenoid valve control fuel gas injection, control chamber is interior to use high compression ignition Oil builds pressure, and by the oil inlet of solenoid valve control high pressure fuel, draining to control the lifting of needle-valve, take a seat, fuel gas injection response is fast, The control of jet amount is accurate;Combustion gas is pressurized using charged piston, pressurization is anxious after first delaying, and can be in supercharging or non pressurized Flexibly switch between pattern, can realize variable jet rule, effectively improve the economy of engine power performance and fuel;Solenoid valve Body is designed with cooling oil path, and cooling oil path is connected to control chamber, heat is taken away to reduce solenoid valve by oil inlet, draining oil circulation Portion temperature ensure that the reliability and stability of electromagnetic valve work;Seal band, introducing portion are provided between needle-valve and needle seating Sub-control liquefaction can be effectively prevented gas leakage, while at the control oil and needle-valve in control chamber as sealing oil seal combustion gas Seal Oil use same oil, oil pressure is equal, can be effectively ensured that control oil, Seal Oil is without static leakage;Charged piston and increasing Gas leakage is prevented using long band and big oil pocket between pressure piston bush couple, improves the stability of air-jet device work.
Description of the drawings
Fig. 1 is the structural diagram of the present invention;
Fig. 2 a are compression portion structural schematic diagram of the present invention, and Fig. 2 b are the structure that the oily band of annular is communicated with servo oil draining road Schematic diagram, Fig. 2 c are the structural schematic diagram that the oily band of annular is communicated with servo oil oil input channel;
Fig. 3 a are control section structural schematic diagram of the present invention, and Fig. 3 b are upper sealing cone and conical surface sealed base point on valve rod The schematic diagram opened, Fig. 3 c are upper sealing cone and the schematic diagram that conical surface sealed base is bonded on valve rod;
Fig. 4 is nozzle segment structural schematic diagram.
Specific implementation mode
It illustrates below in conjunction with the accompanying drawings and the present invention is described in more detail:
In conjunction with Fig. 1~4, supercharging No leakage electromagnetic control type fuel gas ejecting device of the invention is mainly by compression portion 1, control Part 2, nozzle segment 3 and injection apparatus body 4 processed form.Compression portion 1 includes mainly boost electromagnetic valve I, intake valve II, supercharging Piston bush 19, charged piston 20, solenoid valve seat 21 etc..Wherein, annular oily band 7, electromagnetism are designed on the valve rod 8 of boost electromagnetic valve Servo oil oil input channel 28, servo oil draining road 5 are designed on valve seat 21.When boost electromagnetic valve is not powered on, the annular oil connection of band 7 is let out Oil duct 5 and servo oil pocket 22;When boost electromagnetic valve is powered, annular oil band 7 is connected to oil input channel 28 and servo oil pocket 22.Intake valve is Check valve, when combustion gas enters intake valve, valve rod 15 is opened under combustion gas effect, and combustion gas enters pumping chamber 18;Work as charged piston 20 downlinks, when gaseous-pressure increases in pumping chamber 18, intake valve is closed.Control section 2 mainly include control solenoid valve III, Conical surface seal seat 37, control chamber 40 etc. under conical surface seal receptacle 35, valve rod on valve rod.Wherein, the valve rod 32 of solenoid valve is controlled Upper design is upper sealing cone 45 respectively, lower sealing cone 44, is located at upper sealing there are two sealing cone and two Sheng oil ring bands The low pressure oil annulus 46 of 45 top of the conical surface and the high pressure oil annulus 43 positioned at 44 lower section of lower sealing cone, low pressure oil annulus 46 pass through Oil duct is connected to drain tap 33, and high pressure oil annulus 43 is connected to by oil duct with high-pressure oil passage entrance 36.Control solenoid valve not When energization, solenoid valve valve rod 32 is taken a seat, and lower sealing cone 44 closes high pressure oil annulus 43, and upper sealing cone 45 is opened, control chamber 40 are connected to drain tap 33;When controlling solenoid valve energization, solenoid valve valve rod 32 lifts, and upper sealing cone 45 closes low pressure oil Annulus 46, lower sealing cone 44 are opened, and high pressure oil enters control chamber 40.Nozzle segment mainly include needle-valve 39, seal band 53, Nozzle cage 54, needle-valve pedestal 55, needle chamber 57 etc..It is designed with annular step on needle-valve 39, below annular step, needle-valve Control chamber 40 is formed between 39 and injection apparatus body 4.Needle chamber 57 is formed between needle-valve 39 and needle-valve pedestal 55, in needle chamber 57 Top is designed with seal band 53 between needle-valve 39 and needle-valve pedestal 55, seal band is arrived by oil duct introducing portion control oil 53 sealing combustion gas.
The supercharging No leakage electromagnetic control type fuel gas ejecting device of the present invention is mainly by compression portion 1, control section 2, spray Mouth point 3 and injection apparatus shell 4 form.There are high voltage control oil-in 36 and drain tap 33 on injection apparatus shell 4.
Compression portion 1 is located at 4 top of injection apparatus body, and the two is using threaded connection.Compression portion 1 includes mainly supercharging electricity Magnet valve I, intake valve II, charged piston spring 11, charged piston set 19, charged piston 20, solenoid valve seat 21 etc..Wherein, it is pressurized Solenoid valve is by magnetic valve spring 6, solenoid valve valve rod 8, spring washer 9, baffle 10, solenoid valve seat 21, armature 23, electromagnetic valve body 24, the compositions such as locating snap ring 25, coil 26, electromagnet 27.Intake valve includes mainly inlet valve seat 14, inlet valve spindle 15, air inlet Valve spring 16 etc..Increase and be designed with annular oily band 7 on the valve rod 8 of solenoid valve, be designed on solenoid valve seat 21 servo oil oil input channel 28, Servo oil draining road 5.8 one end of solenoid valve valve rod is fixed on by locating snap ring 25 on solenoid valve armature 23, can be with armature 23 1 Side-to-side movement is played, the other end runs through solenoid valve seat 21, is pressed on baffle 10 under the action of 6 pretightning force of magnetic valve spring.Electromagnetism Valve seat 21 can play position-limiting action to the lift of electromagnetism valve rod 8, and be designed with oil duct thereon, being capable of leader servo oil stream warp Boost electromagnetic valve plays the role of cooling solenoid valve and reduces the shock and vibration of 8 side-to-side movement of solenoid valve armature 23 and valve rod. Servo oil pocket 22 is formed above 20 major part of charged piston between compression face and piston bush 19, solenoid valve seat 21, charged piston 20 is small Pumping chamber 18 is formed between head lower section compression face and piston bush 19.Intake valve is check valve, and 16 pretightning force of resetting spring is smaller, Opening pressure is low, and when combustion gas enters intake valve, valve rod 15 is opened under combustion gas effect, and combustion gas enters pumping chamber 18;Work as supercharging 20 downlink of piston, when gaseous-pressure increases in pumping chamber 18, intake valve is closed.Charged piston 20 and charged piston set 19 are a pair Precision pair, fit clearance is small and contact length is big, can effectively prevent and is altered in the combustion gas in pumping chamber 18, and prevents servo oil pocket Fuel leakage in 22;A big cavity 12 is formed between 20 major part of charged piston and the groove of piston bush 19, even if there is part Combustion gas, fuel leakage enter cavity 12, it can be hindered further to interpenetrate in intracavitary oil, gas mixing, 20 surface of charged piston The oil film of formation is in dynamic balance state during piston motion, can further prevent gas leakage.
Control section 2 is located among injection apparatus body 4, and each section is fixed using positioning pin.Control section 2 includes mainly control Conical surface seal seat 37, control chamber 40 etc. under conical surface seal receptacle 35, valve rod on solenoid valve III processed, valve rod.Wherein, jet is controlled Solenoid valve includes mainly electromagnet 29, coil 30, armature 31, solenoid valve valve rod 32, magnetic valve spring 34, locating snap ring 48, electromagnetism Valve body 49 etc..Coil 30 and electromagnet 29 are mounted in electromagnetic valve body 49, and armature 31 is located at 29 lower section of electromagnet.Solenoid valve valve rod Design is upper sealing cone 45, lower sealing cone 44 respectively, positioned at upper close there are two sealing cone and two Sheng oil ring bands on 32 The low pressure oil annulus 46 of 45 top of the conical surface and the high pressure oil annulus 43 positioned at 44 lower section of lower sealing cone are sealed, low pressure oil annulus 46 is logical Oil channel is connected to drain tap 33, and high pressure oil annulus 43 is connected to by oil duct with high-pressure oil passage entrance 36.Solenoid valve valve rod 32 1 End is fixed on by locating snap ring 48 on solenoid valve armature 31, can be moved with armature 31, and the other end runs through solenoid valve armature Conical surface sealed base 35 on the valve rod of 31 lower sections, is pressed in conical surface seal bottom under valve rod under the action of 34 pretightning force of magnetic valve spring On seat 37.Magnetic valve spring 34 is fixed on solenoid valve valve rod 32 and valve rod between conical surface sealed base 35, is stuck in valve rod epicone In the groove of face sealed base 35, conical surface sealed base 35 can also play the position-limiting action to 32 lift of valve rod on valve rod.Valve rod It is designed with oil duct on upper sealed base 35, the fuel oil at low pressure oil annulus 25 can be guided to flow through control solenoid valve, is flowed to Low pressure drain tap 33 takes away heat, cooling electromagnetic valve body under fuel flow effect, and reduces the up and down motion of solenoid valve armature 31 Shock and vibration, to improve the stability of electromagnetic valve work.A plurality of oil duct is designed under valve rod on conical surface seal pedestal 37 And air flue, it is respectively used to connection high pressure oil annulus 43 and control oil-in 36, fluid is guided into control chamber 32, part is controlled into oil It guides seal band 53 into, combustion gas is introduced into needle chamber 57.
Nozzle segment 3 is located at 4 lower section of injection apparatus body, and the two is using threaded connection.Nozzle segment includes needle-valve 39, spring Washer 38, needle-valve resetting spring 41, spring base 42, sealing ring 50, seal band 53, nozzle cage 54, needle-valve pedestal 55, needle chamber 57 etc..It is designed with annular step on needle-valve 39, below annular step, forms control between needle-valve 39 and injection apparatus body 4 Chamber 40 processed.Needle-valve 39 is pushed in the preload force effect of needle valve spring 41 on needle-valve pedestal 55, needle-valve 39 and needle-valve pedestal 55 it Between formed needle chamber 57 seal band 53 is designed between needle-valve 39 and needle-valve pedestal 55 above needle chamber 57.Nozzle cage 54 It is designed with sealing ring 50 between injection apparatus body 4, prevents the combustion gas of cylinder high temperature, high pressure from entering in injection apparatus.Needle-valve bottom 55 sides of seat are provided with gas inlet passage 58, annular air inlet duct 59, and high-pressure gas is introduced needle chamber 57, with meet air-jet device into Gas requirement;The other side is provided with annular oil-feed tank 51, oil input channel 52, and part, which is controlled oil, introduces seal band 53.The spray of the present invention Injection device sprays combustion gas, and what is introduced at needle chamber 57 is combustion gas, and combustion is easy to happen during the work of needle-valve 39 lifts and takes a seat Gas moves upward leakage with needle-valve 39, when the combustion gas of leakage enters control chamber 40, since the compressibility of combustion gas can seriously affect The jet characteristic of fuel gas ejecting device.In order to solve the problems, such as this, fuel gas ejecting device needle-valve 39 of the invention and needle-valve pedestal 55 Between be provided with seal band 53, introduce control oil seal combustion gas, gas leakage can be effectively prevented.In addition, in control chamber 40 The oily Seal Oil in seal band 53 of control uses same oil, and oil pressure is equal up and down for needle-valve, and it is oily, close that control can be effectively ensured Oil sealing is without static leakage.
When engine works, control unit acquires the input signal of sensor, driving boost electromagnetic valve, control jet electromagnetism Valve works, and to control combustion gas supercharging in pumping chamber 18 respectively, air inlet and control chamber 32 build pressure, pressure release.Work as boost electromagnetic valve When power-off, solenoid valve valve rod 8 is withstood under the action of magnetic valve spring 6 on right-hand apron 10, at this point, the annular oil connection of band 7 is let out Oil duct 5 and servo oil pocket 22, as shown in Fig. 2 (b), servo oil stream is pressed to low pressure drain tap, servo oil pocket 22 in servo oil pocket 22 Power reduces, uplink under the action of resetting spring 11 of charged piston 20, and gaseous-pressure declines in pumping chamber 18, the open-top air inlet of combustion gas Valve valve rod 15 starts air inlet;Increase solenoid valves when, electromagnet 27 attract armature 23, armature 23 with moving electromagnetic valve valve rod 8 to the left Movement, at this point, annular oil band 7 is connected to oil input channel 28 and servo oil pocket 22, as shown in Fig. 2 (c), servo oil enters servo oil pocket 22,22 pressure rise of servo oil pocket pushes 20 downlink of charged piston, and pressure just starts to increase in pumping chamber 18, and intake valve closes It closes, charged piston 20, which continues traveling downwardly, is pressurized combustion gas in pumping chamber 18.Combustion gas enters needle chamber 57 by air flue in pumping chamber 18. When controlling solenoid valve power-off, solenoid valve valve rod 32 is under the action of magnetic valve spring 34 in state of taking a seat, lower sealed taper High pressure oil annulus 43 is closed in face 44, and upper sealing cone 45 is opened, and as shown in Fig. 3 (b), high-pressure oil passage turns off at this time, control chamber 40 It is connected to drain tap 33, pressure is low in control chamber 40, and needle-valve 39 is pressed under the action of needle valve spring 41 on needle seating 55, closes Spray orifice 56, injection apparatus not jet;When controlling solenoid valve energization, electromagnet 29 attracts armature 31, armature 31 to drive electromagnetism Valve valve rod 32 lifts, and upper sealing cone 45 closes low pressure oil annulus 46, and lower sealing cone 44 is opened, as shown in Fig. 3 (c), at this time Low pressure oil way turns off, and control chamber 40 is connected to high-pressure oil passage, and high pressure oil enters the circular ring shape platform that control chamber 40 acts on needle-valve 39 On rank, needle-valve 39, which lifts rapidly, opens spray orifice 56, and injection apparatus starts jet.
By the above-mentioned course of work it is found that the jet process of supercharging No leakage electromagnetic control type fuel gas ejecting device is by double electromagnetism Valve controls, and has response quickly, the characteristics of being accurately controlled to jet amount.According to control signal, the power-off of compression portion solenoid valve, combustion Gas is not pressurized, and when solenoid valves, combustion gas is pressurized, and injection pressure improves, it can be achieved that combustion gas supercharging or no charge mode are appointed Meaning switching, spray characteristic is flexibly adjustable, can meet requirement of the Different Work Condition of Engine to fuel gas injection pressure.Compression portion uses The long band of couple, which increases oil pocket, prevents gas leakage, nozzle segment that can be effectively prevented combustion gas using fuel sealing combustion gas and let out Leakage, in addition, control oil and Seal Oil can effectively prevent the fuel oil static leakage of control chamber and seal band using same oil.Cause This, the present invention can make engine meet increasingly strict emission regulation demands, effectively improve its dynamic property, economy and can By property.

Claims (2)

1. it is pressurized No leakage electromagnetic control type fuel gas ejecting device, it is characterized in that:Including compression portion, control section and spray nozzle part Point;
The compression portion includes boost electromagnetic valve, intake valve, charged piston set, charged piston;The boost electromagnetic valve includes Electromagnetic valve body, solenoid valve valve rod, baffle, solenoid valve seat, solenoid valve armature, supercharging coil, supercharging electromagnet, solenoid valve armature are set It sets by supercharging electromagnet, is pressurized winding supercharging coil in electromagnet, solenoid valve valve rod one end is by being pressurized locating snap ring and electromagnetism Valve armature is fixed, and the other end runs through solenoid valve seat, and the rear held herein is fixed with baffle, and solenoid valve is cased on solenoid valve valve rod The both ends of spring, magnetic valve spring are withstood on respectively on solenoid valve seat and solenoid valve valve rod, and charged piston puts on end and is mounted on electricity In magnet valve seat, charged piston is mounted in charged piston set, shape between charged piston upper end, charged piston set and solenoid valve seat At servo oil pocket, pumping chamber is formed between charged piston lower end and charged piston set, charged piston spring is cased on charged piston, The both ends of charged piston spring are withstood on respectively between the lower section of charged piston upper end and charged piston set;Intake valve includes intake valve Valve rod, inlet valve spring, inlet valve seat, intake valve big spring seat, intake valve little spring seat, inlet valve seat are fixed on charged piston In set, intake valve big spring seat and intake valve little spring seat are respectively positioned in inlet valve seat, and intake valve big spring seat is by inlet valve seat Inner cavity be separated into left chamber and right chamber, the head of air inlet valve lever is pressed on the outer wall of inlet valve seat, and the tail portion of air inlet valve lever is stretched into It is connected with check valve little spring seat in inlet valve seat and across intake valve big spring seat, it is big that intake valve resetting spring is located at intake valve Between spring base and intake valve little spring seat and be placed on air inlet valve lever, air inlet opened up in charged piston set, air inlet with into Air valve seat left chamber communicates, and is communicated with pumping chamber on the outside of air inlet valve lever head;
The control section includes conical surface seal seat under conical surface seal receptacle, valve rod on control solenoid valve, valve rod;The control Solenoid valve includes control electromagnet, control coil, controls armature, control valve rod, application valve body, on application valve body, valve rod Conical surface seal seat sets gradually and is installed in injection apparatus body from top to bottom under conical surface seal seat and valve rod, injection apparatus body Upper end is mounted in charged piston set, and control electromagnet is mounted in application valve body, and control coil is wrapped in control electromagnet On, control armature is located at below control electromagnet, and control valve rod one end is mutually fixed by controlling locating snap ring with control armature, another End conical surface seal receptacle and stretches under valve rod in conical surface seal seat on the valve rod, control be provided on valve rod sealing cone and Lower sealing cone, upper sealing cone are matched with conical surface sealed base on valve rod, lower sealing cone and conical surface seal bottom under valve rod Seat matches, and controls and low pressure oil annulus is arranged on valve rod above upper sealing cone, and setting is high below control valve rod upper-lower seal face Pressure oil annulus, is arranged drain tap on valve rod in conical surface sealed base, high-pressure oil passage entrance is arranged in conical surface seal pedestal under valve rod, Low pressure oil annulus is connected to drain tap, and high pressure oil annulus is connected to high-pressure oil passage entrance, controls and is cased with control spring on valve rod, controls bullet The both ends of spring are withstood on control valve rod and valve rod respectively between conical surface sealed base;
The nozzle segment includes needle-valve, needle-valve resetting spring, needle-valve pedestal, and needle-valve pedestal is fixed below injection apparatus body, Needle-valve upper end stretches under valve rod in conical surface seal pedestal, and needle-valve lower end is located in needle-valve pedestal, and annulus is arranged on needle-valve Shape step is located at the part below annular step on needle-valve and forms control chamber between injection apparatus body, is located at circle on needle-valve Part above ring-shaped step is cased with needle-valve resetting spring, and needle chamber and sealing ring are respectively formed between needle-valve and needle-valve pedestal Band, the setting gas inlet passage communicated with needle chamber and the oil input channel communicated with seal band, gas inlet in needle-valve pedestal Road passes through conical surface seal pedestal under injection apparatus body, valve rod, conical surface sealed base on valve rod, is communicated with pumping chamber, oil input channel is worn Overspray apparatus body is communicated with the high-pressure oil passage entrance in conical surface seal pedestal under valve rod.
2. supercharging No leakage electromagnetic control type fuel gas ejecting device according to claim 1, it is characterized in that:The solenoid valve It is provided with annular oily band on valve rod, servo oil oil input channel and servo oil draining road, solenoid valve valve rod top are provided on solenoid valve seat When on baffle, annular oil band is communicated with servo oil draining road and servo oil pocket, and solenoid valve valve rod is with solenoid valve armature to moving to left After dynamic, annular oil band is communicated with servo oil oil input channel and servo oil pocket.
CN201510853734.9A 2015-11-27 2015-11-27 It is pressurized No leakage electromagnetic control type fuel gas ejecting device Active CN105508082B (en)

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CN107165747B (en) * 2017-06-28 2023-06-09 哈尔滨工程大学 Piezoelectric type internal guide gas injection valve with bypass type axial air inlet
CN107131077B (en) * 2017-06-28 2023-06-09 哈尔滨工程大学 Bypass piezoelectric type external guide gas injection valve with floating valve seat
CN107091355B (en) * 2017-06-28 2023-05-30 哈尔滨工程大学 Bypass type piezoelectric type external guide gas injection valve with axial air inlet
CN110735928B (en) * 2018-07-18 2022-02-18 浙江三花制冷集团有限公司 Pilot-operated type electromagnetic valve
CN109555620B (en) * 2018-10-22 2023-09-22 中船动力研究院有限公司 Gas injection valve with automatic protection device and working method thereof
CN109372658B (en) * 2018-12-10 2020-10-13 大连理工大学 Gas injector of gas engine and working method thereof
CN111828203B (en) * 2020-06-28 2021-12-14 上海中船三井造船柴油机有限公司 Gas jet valve of low-speed machine for ship
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